I have seen them listed application wise, both ways. wayne brewer shows them as 2 slightly different humps. no doubt anyone with any skill at all can make it work for all 67-76 A bodies. I bet the repop floor pans are the same for all A bodies of that era too.
i just put it on here as I have several. maybe someone rather have a used one for cheaper than a new one!! and need to get a few $$ for new rad. for the duster!!!